Improvement in weft-stop mechanisms



4 Sheets8heet 1.

F. 0. 'IUCSKER- WEET-STOP mcmmsu.

N0.174,928. Pa.tented March 21,1876.

4 SheetsSheet2. F. 0. TUGKER.

W'EFT-STOP MEGHANISM. N0.174,9281 Patented. Ma.r0h 21,1876.

N. PETERS, PHDTOLITHOGRAPIIER WASHINGTON. D 0

4 Sheets-Sheet 3.

F. 0. 'IUCKER. W'EFT-STOP MECHANISZNI.

Nn.174,928. Pa.tented March Z1,1876

FETERS, FHOTO-IJTHDGRAFMER, WASHINGTON,

. ferred to.

NITEI) STATES PATEI\TT FREDERICK O. TUUKER, OF HARTFORD, CONNECTICU'I.

IMPROVEMENT IN WEFT-STOP IVIECHANISMS.

Speeifieation formin'g part of Letters Patent No. 1 74.928, dated March 21, 1876; application filed November 29, 1875.

of its play. Fig: 2 is a bottom view of sene.-

Fig. 3 is a side view of snme parts from opposite side, the dog just mounting the stationary 02mm. Fig. 4is a bottom view of the same as Fig. 2, ezgeept that the tea-r end of the dagger is loeked; Fig. 5 is n top view of of modifiewtions,

The letter en denote's the lathe-beam; b, lever pivoted thereundei; c, eomb oi' wires pivoted t0 lever b and reeiproeeting tln0ugl1 ,latlne beam; 01, u dog pivoted to side of leveri}, and

so aeting in conjunetion witl1 pin 6 tlmt wben the emn f, attaehed to the breast-beam, and

lil'ts the free end of lever 1). g denotes l pivoted dagger, tl1e reir end of whieh is raised, and the fron;endeorrespondingly lowered,

by the upwardinovement of the lever b. as shown in Eig. 3; l a loclcing-pxeee pwoted on pin whieh rests in its normal position (shown in Fig. 2) wllen tlie liltll first starts f'orward,

-but whiel1 is swung t0 position shown in Fig.

end of the de gger [10eked in its lowest position.

"The letter[ladenotes'the weft-thread on whiehthe comb opeintes. Supposing tlne weft=thread to'be in its proper plnee and nnbroken, the

o'peration of the partsdnring 2 00m plete baekandfortli vibr'ntion of the lat-he, startingfrom the rea"r liinitf its play, is as follows AS the whieh strikes endraises the rear end of the degger g, eorrespoi1din gly depressing thelower end, so that it Will 'not strike and operate the belt-shifting meehanism, and thereby stop the loom. As the lathe moves fartl1er forward tl1e upper end of comb c strikes the fresh Weftthread 70, and the effect thereof is to hold tl1e eomb stationary, so t0 spea.k, while the lathe moves forward, ezn1sing the arm h to. strike against the e01nb and thereby swing the front end of the loeking-piece h under the pin j, whieh is on the dagger, wl1ieh holds tl1e dagger with its front end loeked down.- When the lntl1e swings baekward tl1e dog; d retnrns over the stationery eann without lfting lever 1). All 'tl1is timethat is, during the swing from front to rearthe dagger reg1ains thus locked, but the moment that, en the swing from renr t0 fro'nt, the lever b moves upward it lifts the pin j 0 tl1e loeking-piece h, whieh then, aetu ated by the spring m, swings to position shown in Fig. 2, and hereby unloeks the d2Jgger. .Phe spring n throws the front end of the legger up, when not prevented. If', as the'lathe moves fa.rther forward, the fresh weft-thread is found broken, and does not arrest tl1e upper end of the eomb, the loekingpiece h is not swung into loeking position, so that when the lever b fnlls the front end of the dagger flies upward and, at the forwnrd limit of the play of the lntl1e, strikes the shipping meelmnism by 01d methods, and steps tl1e loom.

Fig. 6 is 211 side view of a modfieation. Fig. 7 is a bottom view of smne.

'll1e operation of the parts is the same as just deseribed, exeept tlrat, in plaee of swing ing on 21 pivot, the locking-piece h reciprocntes in a right line with the movements of the eomb, and, by medns of the pin P, gives corresponding rot-ery reeiprooation to tlre disk 1 and its kook s, whiel1 acts in conneetion with pin j.

Fig. 8 is 1LS(6 view of anothe1 moditieation. Fig. 9 is a bottom view of same. Here t he loeking-pieee h slides as in the last-deseribed modifieation, bnt has npon it a hook, h whieln operntes in eonneetion with pin j.

1 claim as my invention In oombination with the lay,1thel r b, a.nd operating meehanism, eo1nb c, loeki pieee h, n.nd dagger g, all substentially as deseribed.

FREDERIGK O.TUOKER.

Witnesses:

R. F. GAYLORD, GEORGE G. SILL. 

